I get what you are saying but... imo, all things being equal [?] and both XLRs and RCAs were available for use, for nil up-pricing, would you not opt for the XLRs?
I am building a whole new mini-system, which will be mostly balanced/XLRs but... not because I have any noise problems; past/present/future.
For consumer applications, the use of XLRs maybe considered as the proverbial lipstick-on-the-pig; but lipstick lives on, to this day and for
some reason.
That
some reason is an emotional uplift, that naturally will make my system sound sexy, beautiful and possibly a few dB louder!